[3] The season began on 13 November 2011 with Wexford Youths and Castlebar Celtic drawing 2–2, Raheny United defeating Shamrock Rovers 5–0 and Stephanie Roche scoring a hat-trick as Peamount United defeated Cork Women's F.C.
On 12 February 2012 Roche scored six goals as Peamount United defeated Castlebar Celtic 13–0 at home.
The return fixture on 15 April saw Peamount United win 9–0 with Roche scoring another hat-trick.
They also completed a league double by winning the WNL Cup, defeating Shamrock Rovers 1–0 in the final on 6 May 2012.
[7] Roche formed a "devastating" strike partnership with Sara Lawlor who contributed 15 goals to Peamount United's league success.